Multiprotocol over wireless ATM

In order to provide seamless communications under the mobility and diversity of users, multiprotocol must be supported at radio access layer of wireless ATM. We outline the technological rationale for multiprotocol over wireless ATM, present a system-level reference architecture of multiprotocol access system, discuss key subsystem design issues. The reference architecture for wireless ATM consists of two major components: (a) a “radio access layer” for extension of ATM services over a wireless medium and (b) a “mobile ATM” infrastructure network capable of supporting terminal migration. Design considerations for both the radio access layer (e.g. physical layer, medium access control and data link control) and mobile ATM (e.g. handoff control, location management and routing/QoS control) are discussed briefly, and key technical issues are identified in each case. A new access means, multiprotocol access over wireless ATM using software radio technologies, is given, which can support PDA, PIA, mobile PC, WLAN (IEEE 802.11) access, and so on